Another basic runners' stretch, this gentle variation of Intense Side Stretch allows you to relax your arms and really focus on opening the backs of the legs.

From Open Lizard pose, bring the knee back to center so the sole of your foot is planted firmly. Tuck your back toes and step your left foot a few inches closer to your hands. Straighten the legs and rest your hands on your front thigh, or if your hamstrings are flexible, fold your torso over your right leg, placing your hands on the floor. Try to keep your pelvis parallel with the front of your mat (you might need to draw the right hip back slightly).

Relax everything, breathing deeply, and savor this stretch for five breaths.